Vehicle air conditioner
First Claim
1. An air conditioner for a vehicle having a temperature-controlled apparatus, the air conditioner comprising:
- a heating heat exchanger for heating air to be blown into a passenger compartment of the vehicle by using cooling water for cooling the temperature-controlled apparatus as a heating source;
a first circuit through which the cooling water passes through the temperature-controlled apparatus and the heating heat exchanger;
a second circuit through which the cooling water passes through the heating heat exchanger while bypassing the temperature-controlled apparatus;
a switching device for switching a cooling water circuit between the first and second circuits; and
a control unit for controlling the switching device so as to select the first circuit when a cooling water temperature flowing out of the heating heat exchanger is lower than a cooling water temperature flowing out of the temperature-controlled apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
In an air conditioner for a vehicle having a temperature-controlled apparatus such as a fuel cell system, a heater core heats air by using unnecessary thermal energy from the fuel cell system. Further, a switching valve is controlled to switch between a first circuit and a second circuit. Cooling water is circulated between the heater core and the fuel cell system in the first circuit, and passes through the heater core while by passing the fuel cell system in the second circuit. When a cooling water temperature flowing from the heater core is lower than a cooling water temperature from the fuel cell system, the switching valve is controlled by a control unit to select the first circuit. Accordingly, the heater core can effectively use the unnecessary thermal energy from the fuel cell system.
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Citations
8 Claims
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1. An air conditioner for a vehicle having a temperature-controlled apparatus, the air conditioner comprising:
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a heating heat exchanger for heating air to be blown into a passenger compartment of the vehicle by using cooling water for cooling the temperature-controlled apparatus as a heating source;
a first circuit through which the cooling water passes through the temperature-controlled apparatus and the heating heat exchanger;
a second circuit through which the cooling water passes through the heating heat exchanger while bypassing the temperature-controlled apparatus;
a switching device for switching a cooling water circuit between the first and second circuits; and
a control unit for controlling the switching device so as to select the first circuit when a cooling water temperature flowing out of the heating heat exchanger is lower than a cooling water temperature flowing out of the temperature-controlled apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification